Free to run your company. Agents cost what they use.
Deals, takeoffs, documents, Buildings and your team cost nothing. Agents are free when they run on your own computer or your own key. Build Cloud runs on prepaid credit at Anthropic's price plus 20%, and never past the cap it shows you.
Design firms pay nothing to answer, review, keep records, check their sets or run sessions.
Free
$0
- Build for your whole company: deals, takeoffs, documents, Buildings and the Map.
- Agents on your computer or your own cloud session (Claude Code, Codex and others): free, always.
- $25 of Build credit once, no card. It runs up to $10 of Build Cloud a day until you add credit.
Your own key
$0 from Build
- Build Cloud runs on your company's own Anthropic key. Anthropic bills you directly, at its own price.
- No limit on runs, and Build adds nothing.
- The key is sealed in Build and used only for your company's runs.
Build credit
List + 20%
- Build Cloud on Build's key, paid from prepaid credit at Anthropic's list price × 1.2.
- Add $25 to $1,000 at a time, or turn on auto-reload.
- Caps per run and per month. A run pauses at its cap and asks before it goes on.
- Every run has a receipt: tokens by model, sandbox time and price.
Build credit price list
Per million tokens, with the 20% included. You see an estimate before a run starts and pay what it actually used.
| Model | Input | Output | Cache read | Cache write |
|---|---|---|---|---|
| Claude Opus 5.5Build Cloud's default | $4.80 | $24.00 | $0.24 | $6.00 |
| Claude Sonnet 5.5 | $2.40 | $12.00 | $0.24 | $3.00 |
| Claude Haiku 5.5 | $0.12 | $0.60 | $0.012 | $0.15 |
| Claude Fable 5.1 | $12.00 | $60.00 | $0.30 | $15.00 |
| Claude Opus 4.8Used only when a newer model declines a task | $6.00 | $30.00 | $0.60 | $7.50 |
A cloud run's workspace is $0.096 an hour while it runs. Runs on your computer, your cloud session or your own key never draw Build credit.
Design firms pay nothing to answer, review, keep records, check their sets or run sessions.
Getting paid
Pay apps and deposits: 0% to Build
Request payment from a pay app or an accepted estimate. The money goes straight to your company's Stripe account. Build takes nothing; Stripe's card or bank fee is yours, and bank transfer is the default above $5,000.
Tips and creator subscriptions: 0% to Build
Tips start at $2. The creator receives the payment less Stripe's processing fee, and the supporter sees that amount before paying.
Prices are in US dollars. People who can't see money in your company never see prices or balances.
Questions about a bill? Your receipts and a usage export are on your company's Billing page in Build.